You can drink all kinds of black tea for diabetes, such as Porcha, Qianliang tea, etc. However, no matter what type of black tea is just a drink, the drink is not equal to the medicine, and it has no therapeutic effect on the disease. The treatment of diabetes mellitus mainly includes general treatment, drug treatment and so on. 1. General treatment: including reasonable diet, avoid high sugar diet, such as cake, milk tea, etc., need to pay attention to work and rest, recommend active exercise, weight control, close monitoring of blood glucose, prevention of complications. 2. Medication: Oral medication and injectable medication. Oral drugs include Metformin, Repaglinide, Acarbose and so on. Injectable preparations such as insulin, liraglutide and so on. The choice of specific drugs for diabetes requires the comprehensive judgment of a professional doctor based on the clinical situation, do not blindly use drugs. Diabetes can consult a doctor to develop an individualized diet plan.